Imperial College London
Around 150,000 tests a day are currently carried out in the UK.
Leading epidemiologist says opening high schools could see the coronavirus reproduction rate increase "by as much as a half".
But any potential vaccine would have to be released 'very cautiously', the Imperial College London professor warned.
Health secretary Matt Hancock said the over-50s and people with heart conditions would also get priority.
Top scientist forced to resign as government adviser over lockdown breach says epidemic was doubling every three to four days.
Donald Trump reveals he's been taking anti-malaria drug unproven to treat Covid-19, as UK death toll nears 35,000.
Health secretary says it could be safe by the autumn. But Boris Johnson has warned a vaccine may never be developed.
Study suggests that the changes would lower the coronavirus infection rate over a two-month period and avoid a second wave.
A WHO expert appeared to dismiss suggestions from health minister Nadine Dorries that the UK needs a vaccine before it can “exit full lockdown".
The Imperial College report said it had only reached its conclusions in the last few days based on experience in Italy and the UK.